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What is AHU, FAHU, TFA and Heat wheel recovery system?

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Question added by MOHAMED SHAHRIN VK , Mechanical Engineer , Transgulf Electromechanical LLC, Saeed and Mohammed Al Naboodah Group
Date Posted: 2017/01/19
Ousama Al Attar
by Ousama Al Attar , Senior Mech Engineer , F&M Middle East Engineering Consultancy

AHU: IS A MECHANICAL ASSEMBLY OF FANS,COILS,FILTERS AND HUMIDIFIER OR DEHUMIDIFIER INSTRUMENTS INCLUDED IN A CABINET HAS AN INLETS & OUTLETS ,

USED AS A BIG AIR CONDITIONER TO TREAT AIR  BEFORE DISTRIBUTE IT TO THE CONDITIONED AREAS.

 

FAHU : IS AIR AHU DEAL WITH FRESH AIR ONLY.

TFA : TREATED FRESH AIR.

HRW : IS AN INSTRUMENT TO SAVE ENERGY BY MAKING CONTACT BETWEEN EXHAUSTED AIR AND FRESH AIR ACROSS CONTACT SURFACE WITHOUT. 

AHU- Air Handling Unit. In AHU's mixing of fresh air and return air takes place.

FAHU- Fresh Air Handling Unit

TFA- Treated Fresh Air

HRW system- Heat Recovery Wheel- Using HRW, Heat is exchanged between exhaust air and fresh air, which will help to save energy.

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